6533b824fe1ef96bd128095e
RESEARCH PRODUCT
Electronic structure of the spin-12quantum magnet TiOCl
Eric JeckelmannJ. SchäferL. PisaniRoser ValentíM. HoinkisH. BenthienTanusri Saha-dasguptaMatthias KlemmM. SingM. SingSiegfried HornRalph ClaessenRalph Claessensubject
PhysicsX-ray photoelectron spectroscopyHubbard modelCondensed matter physicsMagnetCondensed Matter::Strongly Correlated ElectronsStrongly correlated materialElectronElectronic structureCondensed Matter PhysicsPhenomenology (particle physics)QuantumElectronic Optical and Magnetic Materialsdescription
We have studied the electronic structure of the spin-$1∕2$ quantum magnet TiOCl by polarization-dependent momentum-resolved photoelectron spectroscopy. From that, we confirm the quasi-one-dimensional nature of the electronic structure along the crystallographic $b$ axis and find no evidence for sizable phonon-induced orbital fluctuations as the origin for the noncanonical phenomenology of the spin-Peierls transition in this compound. A comparison of the experimental data to our own $\mathrm{LDA}+\mathrm{U}$ and Hubbard model calculations reveals a striking lack of understanding regarding the quasi-one-dimensional electron dispersions in the normal state of this compound.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-09-29 | Physical Review B |